/* {{{ php_zlib_encode() */
static zend_string *php_zlib_encode(const char *in_buf, size_t in_len, int encoding, int level)
{
int status;
z_stream Z;
zend_string *out;
memset(&Z, 0, sizeof(z_stream));
Z.zalloc = php_zlib_alloc;
Z.zfree = php_zlib_free;
if (Z_OK == (status = deflateInit2(&Z, level, Z_DEFLATED, encoding, MAX_MEM_LEVEL, Z_DEFAULT_STRATEGY))) {
out = zend_string_alloc(PHP_ZLIB_BUFFER_SIZE_GUESS(in_len), 0);
Z.next_in = (Bytef *) in_buf;
Z.next_out = (Bytef *) ZSTR_VAL(out);
Z.avail_in = in_len;
Z.avail_out = ZSTR_LEN(out);
status = deflate(&Z, Z_FINISH);
deflateEnd(&Z);
if (Z_STREAM_END == status) {
/* size buffer down to actual length */
out = zend_string_truncate(out, Z.total_out, 0);
ZSTR_VAL(out)[ZSTR_LEN(out)] = '\0';
return out;
} else {
zend_string_free(out);
}
}
php_error_docref(NULL, E_WARNING, "%s", zError(status));
return NULL;
}
/* {{{ php_escape_shell_arg
*/
PHPAPI zend_string *php_escape_shell_arg(char *str)
{
int x, y = 0, l = (int)strlen(str);
zend_string *cmd;
size_t estimate = (4 * l) + 3;
cmd = zend_string_alloc(4 * l + 2, 0); /* worst case */
#ifdef PHP_WIN32
cmd->val[y++] = '"';
#else
cmd->val[y++] = '\'';
#endif
for (x = 0; x < l; x++) {
int mb_len = php_mblen(str + x, (l - x));
/* skip non-valid multibyte characters */
if (mb_len < 0) {
continue;
} else if (mb_len > 1) {
memcpy(cmd->val + y, str + x, mb_len);
y += mb_len;
x += mb_len - 1;
continue;
}
switch (str[x]) {
#ifdef PHP_WIN32
case '"':
case '%':
case '!':
cmd->val[y++] = ' ';
break;
#else
case '\'':
cmd->val[y++] = '\'';
cmd->val[y++] = '\\';
cmd->val[y++] = '\'';
#endif
/* fall-through */
default:
cmd->val[y++] = str[x];
}
}
#ifdef PHP_WIN32
if (y > 0 && '\\' == cmd->val[y - 1]) {
int k = 0, n = y - 1;
for (; n >= 0 && '\\' == cmd->val[n]; n--, k++);
if (k % 2) {
cmd->val[y++] = '\\';
}
}
cmd->val[y++] = '"';
#else
cmd->val[y++] = '\'';
#endif
cmd->val[y] = '\0';
if ((estimate - y) > 4096) {
/* realloc if the estimate was way overill
* Arbitrary cutoff point of 4096 */
cmd = zend_string_truncate(cmd, y, 0);
}
cmd->len = y;
return cmd;
}
/* {{{ php_escape_shell_cmd
Escape all chars that could possibly be used to
break out of a shell command
This function emalloc's a string and returns the pointer.
Remember to efree it when done with it.
*NOT* safe for binary strings
*/
PHPAPI zend_string *php_escape_shell_cmd(char *str)
{
register int x, y, l = (int)strlen(str);
size_t estimate = (2 * l) + 1;
zend_string *cmd;
#ifndef PHP_WIN32
char *p = NULL;
#endif
cmd = zend_string_alloc(2 * l, 0);
for (x = 0, y = 0; x < l; x++) {
int mb_len = php_mblen(str + x, (l - x));
/* skip non-valid multibyte characters */
if (mb_len < 0) {
continue;
} else if (mb_len > 1) {
memcpy(cmd->val + y, str + x, mb_len);
y += mb_len;
x += mb_len - 1;
continue;
}
switch (str[x]) {
#ifndef PHP_WIN32
case '"':
case '\'':
if (!p && (p = memchr(str + x + 1, str[x], l - x - 1))) {
/* noop */
} else if (p && *p == str[x]) {
p = NULL;
} else {
cmd->val[y++] = '\\';
}
cmd->val[y++] = str[x];
break;
#else
/* % is Windows specific for environmental variables, ^%PATH% will
output PATH while ^%PATH^% will not. escapeshellcmd->val will escape all % and !.
*/
case '%':
case '!':
case '"':
case '\'':
#endif
case '#': /* This is character-set independent */
case '&':
case ';':
case '`':
case '|':
case '*':
case '?':
case '~':
case '<':
case '>':
case '^':
case '(':
case ')':
case '[':
case ']':
case '{':
case '}':
case '$':
case '\\':
case '\x0A': /* excluding these two */
case '\xFF':
#ifdef PHP_WIN32
cmd->val[y++] = '^';
#else
cmd->val[y++] = '\\';
#endif
/* fall-through */
default:
cmd->val[y++] = str[x];
}
}
cmd->val[y] = '\0';
if ((estimate - y) > 4096) {
/* realloc if the estimate was way overill
* Arbitrary cutoff point of 4096 */
cmd = zend_string_truncate(cmd, y, 0);
}
cmd->len = y;
return cmd;
}
/* {{{ php_escape_shell_arg
*/
PHPAPI zend_string *php_escape_shell_arg(char *str)
{
size_t x, y = 0;
size_t l = strlen(str);
zend_string *cmd;
uint64_t estimate = (4 * (uint64_t)l) + 3;
/* max command line length - two single quotes - \0 byte length */
if (l > cmd_max_len - 2 - 1) {
php_error_docref(NULL, E_ERROR, "Argument exceeds the allowed length of %d bytes", cmd_max_len);
return ZSTR_EMPTY_ALLOC();
}
cmd = zend_string_safe_alloc(4, l, 2, 0); /* worst case */
#ifdef PHP_WIN32
ZSTR_VAL(cmd)[y++] = '"';
#else
ZSTR_VAL(cmd)[y++] = '\'';
#endif
for (x = 0; x < l; x++) {
int mb_len = php_mblen(str + x, (l - x));
/* skip non-valid multibyte characters */
if (mb_len < 0) {
continue;
} else if (mb_len > 1) {
memcpy(ZSTR_VAL(cmd) + y, str + x, mb_len);
y += mb_len;
x += mb_len - 1;
continue;
}
switch (str[x]) {
#ifdef PHP_WIN32
case '"':
case '%':
case '!':
ZSTR_VAL(cmd)[y++] = ' ';
break;
#else
case '\'':
ZSTR_VAL(cmd)[y++] = '\'';
ZSTR_VAL(cmd)[y++] = '\\';
ZSTR_VAL(cmd)[y++] = '\'';
#endif
/* fall-through */
default:
ZSTR_VAL(cmd)[y++] = str[x];
}
}
#ifdef PHP_WIN32
if (y > 0 && '\\' == ZSTR_VAL(cmd)[y - 1]) {
int k = 0, n = y - 1;
for (; n >= 0 && '\\' == ZSTR_VAL(cmd)[n]; n--, k++);
if (k % 2) {
ZSTR_VAL(cmd)[y++] = '\\';
}
}
ZSTR_VAL(cmd)[y++] = '"';
#else
ZSTR_VAL(cmd)[y++] = '\'';
#endif
ZSTR_VAL(cmd)[y] = '\0';
if (y > cmd_max_len + 1) {
php_error_docref(NULL, E_ERROR, "Escaped argument exceeds the allowed length of %d bytes", cmd_max_len);
zend_string_release(cmd);
return ZSTR_EMPTY_ALLOC();
}
if ((estimate - y) > 4096) {
/* realloc if the estimate was way overill
* Arbitrary cutoff point of 4096 */
cmd = zend_string_truncate(cmd, y, 0);
}
ZSTR_LEN(cmd) = y;
return cmd;
}
/* {{{ php_escape_shell_cmd
Escape all chars that could possibly be used to
break out of a shell command
This function emalloc's a string and returns the pointer.
Remember to efree it when done with it.
*NOT* safe for binary strings
*/
PHPAPI zend_string *php_escape_shell_cmd(char *str)
{
register size_t x, y;
size_t l = strlen(str);
uint64_t estimate = (2 * (uint64_t)l) + 1;
zend_string *cmd;
#ifndef PHP_WIN32
char *p = NULL;
#endif
/* max command line length - two single quotes - \0 byte length */
if (l > cmd_max_len - 2 - 1) {
php_error_docref(NULL, E_ERROR, "Command exceeds the allowed length of %d bytes", cmd_max_len);
return ZSTR_EMPTY_ALLOC();
}
cmd = zend_string_safe_alloc(2, l, 0, 0);
for (x = 0, y = 0; x < l; x++) {
int mb_len = php_mblen(str + x, (l - x));
/* skip non-valid multibyte characters */
if (mb_len < 0) {
continue;
} else if (mb_len > 1) {
memcpy(ZSTR_VAL(cmd) + y, str + x, mb_len);
y += mb_len;
x += mb_len - 1;
continue;
}
switch (str[x]) {
#ifndef PHP_WIN32
case '"':
case '\'':
if (!p && (p = memchr(str + x + 1, str[x], l - x - 1))) {
/* noop */
} else if (p && *p == str[x]) {
p = NULL;
} else {
ZSTR_VAL(cmd)[y++] = '\\';
}
ZSTR_VAL(cmd)[y++] = str[x];
break;
#else
/* % is Windows specific for environmental variables, ^%PATH% will
output PATH while ^%PATH^% will not. escapeshellcmd->val will escape all % and !.
*/
case '%':
case '!':
case '"':
case '\'':
#endif
case '#': /* This is character-set independent */
case '&':
case ';':
case '`':
case '|':
case '*':
case '?':
case '~':
case '<':
case '>':
case '^':
case '(':
case ')':
case '[':
case ']':
case '{':
case '}':
case '$':
case '\\':
case '\x0A': /* excluding these two */
case '\xFF':
#ifdef PHP_WIN32
ZSTR_VAL(cmd)[y++] = '^';
#else
ZSTR_VAL(cmd)[y++] = '\\';
#endif
/* fall-through */
default:
ZSTR_VAL(cmd)[y++] = str[x];
}
}
ZSTR_VAL(cmd)[y] = '\0';
if (y > cmd_max_len + 1) {
php_error_docref(NULL, E_ERROR, "Escaped command exceeds the allowed length of %d bytes", cmd_max_len);
zend_string_release(cmd);
return ZSTR_EMPTY_ALLOC();
}
if ((estimate - y) > 4096) {
/* realloc if the estimate was way overill
* Arbitrary cutoff point of 4096 */
cmd = zend_string_truncate(cmd, y, 0);
}
ZSTR_LEN(cmd) = y;
return cmd;
}
*d++ = '=';
*d++ = hex[c >> 4];
*d++ = hex[c & 0xf];
} else {
if ((++lp) > PHP_QPRINT_MAXL) {
*d++ = '=';
*d++ = '\015';
*d++ = '\012';
lp = 1;
}
*d++ = c;
}
}
}
*d = '\0';
ret = zend_string_truncate(ret, d - (unsigned char*)ZSTR_VAL(ret), 0);
return ret;
}
/* }}} */
/*
*
* Decoding Quoted-printable string.
*
*/
/* {{{ proto string quoted_printable_decode(string str)
Convert a quoted-printable string to an 8 bit string */
PHP_FUNCTION(quoted_printable_decode)
{
zend_string *arg1;
char *str_in;
*d++ = '=';
*d++ = hex[c >> 4];
*d++ = hex[c & 0xf];
} else {
if ((++lp) > PHP_QPRINT_MAXL) {
*d++ = '=';
*d++ = '\015';
*d++ = '\012';
lp = 1;
}
*d++ = c;
}
}
}
*d = '\0';
ret = zend_string_truncate(ret, d - (unsigned char*)ret->val, 0);
return ret;
}
/* }}} */
/*
*
* Decoding Quoted-printable string.
*
*/
/* {{{ proto string quoted_printable_decode(string str)
Convert a quoted-printable string to an 8 bit string */
PHP_FUNCTION(quoted_printable_decode)
{
zend_string *arg1;
char *str_in;
